The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2020
Filed:
Feb. 27, 2019
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Takenori Ohshima, Kawasaki, JP;
Yoji Ohashi, Fucyu, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Atsushi Honda, Setagaya, JP;
Toru Maniwa, Setagaya, JP;
Alexander Nikolaevich Lozhkin, Kawasaki, JP;
Toshio Kawasaki, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Tomoya Ota, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A multiantenna communication device forms a directional beam by adding an antenna weight to respective signals of a plurality of antenna elements. The multiantenna communication device includes: a processor that executes performing distortion compensation on a transmission signal by using a distortion compensation coefficient; a plurality of power amplifiers that are provided corresponding to the antenna elements, and that amplify the transmission signal subjected to the distortion compensation by the processor; a multiplexer that multiplexes signals output from the power amplifiers to feed back; and an analog/digital (A/D) converter that A/D converts a multiplex feedback signal that is obtained by the multiplexer, wherein the processor executes updating the distortion compensation coefficient by using the multiplex feedback signal A/D converted by the A/D converter and the transmission signal.